寄生时栅式电机是基于时栅位移传感器设计的一种自带位置检测功能的驱动装置,在提取电机位置信息的过程中需要滤掉定子磁场的无效成分,此外电机内部的强磁场会随着速度的增加而变得毫无规律,影响转子位置的精确测量。针对上述干扰信号,...寄生时栅式电机是基于时栅位移传感器设计的一种自带位置检测功能的驱动装置,在提取电机位置信息的过程中需要滤掉定子磁场的无效成分,此外电机内部的强磁场会随着速度的增加而变得毫无规律,影响转子位置的精确测量。针对上述干扰信号,采用了低通滤波器、自适应线性神经网络(adaptive linear neuron,ADALINE)等来消除干扰,并通过实验证明该方法效果显著,得到了最优的行波信号,同时实现了寄生时栅式电机转子位置的精确测量。展开更多
Fetal ECG extraction has the vital significance for fetal monitoring.This paper introduces a method of extracting fetal ECG based on adaptive linear neural network.The method can be realized by training a small quanti...Fetal ECG extraction has the vital significance for fetal monitoring.This paper introduces a method of extracting fetal ECG based on adaptive linear neural network.The method can be realized by training a small quantity of data.In addition,a better result can be achieved by improving neural network structure.Thus,more easily identified fetal ECG can be extracted.Experimental results show that the adaptive linear neural network can be used to extract fetal ECG from maternal abdominal signal effectively.What's more,a clearer fetal ECG can be extracted by improving neural network structure.展开更多
文摘寄生时栅式电机是基于时栅位移传感器设计的一种自带位置检测功能的驱动装置,在提取电机位置信息的过程中需要滤掉定子磁场的无效成分,此外电机内部的强磁场会随着速度的增加而变得毫无规律,影响转子位置的精确测量。针对上述干扰信号,采用了低通滤波器、自适应线性神经网络(adaptive linear neuron,ADALINE)等来消除干扰,并通过实验证明该方法效果显著,得到了最优的行波信号,同时实现了寄生时栅式电机转子位置的精确测量。
基金Foundation of Young Backbone Teacher of Beijing Citygrant number:102KB000845
文摘Fetal ECG extraction has the vital significance for fetal monitoring.This paper introduces a method of extracting fetal ECG based on adaptive linear neural network.The method can be realized by training a small quantity of data.In addition,a better result can be achieved by improving neural network structure.Thus,more easily identified fetal ECG can be extracted.Experimental results show that the adaptive linear neural network can be used to extract fetal ECG from maternal abdominal signal effectively.What's more,a clearer fetal ECG can be extracted by improving neural network structure.
